ParameterSetIDHolder.h

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// The only purpose of this is to make it easier to use
// forward declarations when passing around ParameterSetID's.
// ParameterSetID itself is a typedef and hard to forward
// declare.

#include "DataFormats/Provenance/interface/ParameterSetID.h"

namespace edm {
  namespace eventsetup {

    class ParameterSetIDHolder {
    public:
      ParameterSetIDHolder(ParameterSetID const& psetID) : psetID_(psetID) {}
      ParameterSetID const& psetID() const { return psetID_; }
      bool operator<(ParameterSetIDHolder const& other) const { return psetID() < other.psetID(); }
      bool operator==(ParameterSetIDHolder const& other) const { return psetID() == other.psetID(); }

    private:
      ParameterSetID psetID_;
    };
  }  // namespace eventsetup
}  // namespace edm